ProtOSINT is a Python script that helps you investigate ProtonMail accounts and ProtonVPN IP addresses.
-  Test the validity of one protonmail account
-  Try to find if your target have a protonmail account by generating multiple adresses by combining information fields inputted
-  Find if your IP is currently affiliate to ProtonVPN
The account name in the protonmail is case-insensitive and ProtonMail considers the “.” “_” “-” symbols as transparent.
Additionnaly, any words put after a “+” sign are not taken into account.
It means that all of these email adresses below are the same as [email protected] :
Furthermore, this technique does not always give you the creation time and date of the ProtonMail account itself, but the time and date when the email address itself was created (thanks to @sector035 for the tip : https://sector035.nl/articles/2020-50)
Feel free to clone this project. For major changes, please open an issue first to discuss what you would like to change.
Source : KitPloit – PenTest Tools!